The Dow Jones Industrial Average sank to a triple-digit loss in afternoon trading Wednesday, after the Federal Reserve's decision to cut its target on overnight interest rates, but the stock market's breadth remained positive, helped by strength in small-capitalization stocks. The number of advancing stock outnumbered decliners 1,540 to 1,333 on the NYSE and 1,610 to 1,331 on the Nasdaq exchange. Where breadth data showed some weakness was in the larger, more active stocks, as volume of advancing stocks represented just 45.2% of total volume on the Big Board and 36.7% of total volume on the Nasdaq. Meanwhile, the Dow fell 148 points, or 0.5%, with 25 of 30 components losing ground. Just before the Fed's rate decision, the Dow was up about 14 points. The S&P 500 gave up 0.5% and the Nasdaq Composite shed 0.4%, while the Russell 2000 of small-cap stocks rose 0.4%.